A special measuring scale fixing device for a crane

Abstract

The utility model provides a kind of crane special measuring scale fixing device, including fixed base and locking structure.Fixed base is equipped with accommodating groove body and base plate, accommodating groove body has opening and mutually perpendicular first plane and second plane, for the end of the measuring scale is attached;Locking structure includes first locking screw and second locking screw, respectively through first screw hole and second screw hole, measuring scale is fixed on the corresponding plane by resistance.The device can realize the quick, stable fixation of measuring scale, avoid the deviation and vibration interference caused by handheld, improve measurement accuracy and operation efficiency, suitable for a variety of industrial measurement scenarios.

Description

Technical Field

[0001] This utility model relates to the field of crane installation technology, and more specifically, to a crane-specific measuring ruler fixing device. Background Technology

[0002] In crane installation, measuring rulers are the core tool for crane installation positioning and calibration. Their stability and measurement accuracy are directly related to product quality control, production process efficiency, and subsequent assembly compatibility. They are an indispensable basic link in the entire industrial manufacturing chain.

[0003] Currently, the mainstream measuring rulers in the industry (with a rectangular straight bar structure) are still mainly operated manually by hand. This method has significant technical pain points: First, it is not convenient to fix. Operators need to hold the measuring ruler continuously with one or both hands to ensure that it is in contact with the reference surface of the workpiece being measured. Prolonged operation can easily cause hand muscle fatigue, resulting in decreased grip stability and problems such as measuring ruler deviation and tilting. Second, the measurement accuracy is affected by multiple factors. Industrial workshops often have environmental interference such as mechanical vibration. It is difficult to maintain the static balance of the measuring ruler manually, which can easily produce reference deviation. At the same time, when holding the ruler, the operator needs to simultaneously keep the ruler fixed and record the reading. Deviation in line of sight or slight hand shaking can amplify the reading error. Especially in the measurement of large dimensions, it is difficult for a single person to achieve accurate positioning of the measuring ruler, further reducing the reliability of the data.

[0004] Existing improvement solutions are mostly limited to optimizing the accuracy of the measuring scale itself, without proposing effective solutions to the inherent defects of handheld operation. As a result, the industrial measurement process still suffers from low efficiency and high error rate, making it difficult to meet the needs of high-precision scenarios. Utility Model Content

[0005] This application mainly addresses the problems of fatigue, reference offset, and large measurement errors caused by vibration interference in the existing technology of manually handheld measuring rulers. In order to overcome the above-mentioned defects of the existing technology, this application provides a special measuring ruler fixing device for cranes.

[0006] This application provides a crane-specific measuring ruler fixing device, comprising: A fixed base includes a receiving groove and a base plate; the receiving groove has an upwardly oriented opening, and the end of the measuring ruler is inserted into the receiving groove through the opening; the inner wall of the receiving groove has a first plane and a second plane for the measuring ruler to match and fit, and the first plane and the second plane are perpendicular to each other; the base plate is fixed to the bottom of the receiving groove, and the area of ​​the base plate is larger than the cross-sectional area of ​​the receiving groove. A locking structure includes a first locking screw and a second locking screw. The receiving groove is provided with a first screw hole that matches the first locking screw and a second screw hole that matches the second locking screw. The first screw hole communicates with the interior of the receiving groove and is oriented toward a first plane. The second screw hole communicates with the interior of the receiving groove and is oriented toward a second plane. The first locking screw is threadedly connected to the first screw hole, and the end of the screw can extend into the receiving groove to secure the measuring ruler against the first plane; the second locking screw is threadedly connected to the second screw hole, and the end of the screw can extend into the receiving groove to secure the measuring ruler against the second plane.

[0007] Compared with existing technologies, the crane-specific measuring ruler fixing device disclosed in this application has the following advantages: The first and second mutually perpendicular planes within the accommodating groove can match and fit snugly with the end of the rectangular straight measuring ruler, providing a clear and stable reference positioning for the measuring ruler. This solves the problem of the measuring ruler easily shifting or tilting when manually held, ensuring the accuracy of the measurement reference plane. The first locking screw is tightened along the direction towards the first plane, and the second locking screw is tightened along the direction towards the second plane, fixing the measuring ruler from two vertical dimensions. This prevents the measuring ruler from loosening due to mechanical vibration or other environmental factors during measurement, significantly improving the fixing stability of the measuring ruler. The base plate area is larger than the cross-sectional area of ​​the accommodating groove, increasing the contact area with the mounting surface, lowering the center of gravity of the fixing base, reducing the probability of the base itself shifting due to external interference, further providing support for the stability of the measuring ruler, and indirectly improving measurement accuracy.

[0008] In one possible implementation, the receiving groove is provided with a plurality of first screw holes and a plurality of second screw holes; the plurality of first screw holes are spaced apart along a direction perpendicular to the second plane, and the plurality of second screw holes are spaced apart along a direction perpendicular to the first plane. Compared with the prior art, the arrangement of the plurality of first screw holes spaced apart along a direction perpendicular to the second plane and the plurality of second screw holes spaced apart along a direction perpendicular to the first plane allows for the selection of appropriate screw holes to install locking screws according to the end dimensions of measuring scales of different specifications (such as different thicknesses and widths), eliminating the need to design separate fixing devices for different measuring scales and adapting to various measurement scenarios. The fixing requirements of different measuring scales can be met without frequent replacement of fixing devices, reducing equipment investment costs.

[0009] In one possible implementation, anti-slip pads are provided on both the first and second planes. Compared with the prior art, the anti-slip pads on the first and second planes can increase the friction between the measuring ruler and the plane, and even when subjected to slight external forces or vibrations, it can prevent the measuring ruler from sliding relative to the plane, further consolidating the positioning accuracy of the measuring ruler and reducing measurement errors caused by sliding.

[0010] In one possible implementation, washers are provided on the screw ends of both the first and second locking screws to prevent damage to the surface of the measuring scale. Compared with the prior art, the washers at the screw ends increase the contact area with the measuring scale surface, disperse local pressure when the screws are tightened, and prevent indentations or deformation of the measuring scale surface due to excessive pressure at the screw ends, thus protecting the structure and accuracy of the measuring scale. The washers also allow the tightening force of the screws to be applied more evenly to the measuring scale surface, avoiding slight deformation or insecure fixing of the measuring scale due to uneven local force, thereby improving the stability and reliability of the fixing.

[0011] In one possible implementation, the base plate is provided with mounting holes for fixing the mounting base to the mounting surface using bolts. Compared with the prior art, by using the mounting holes on the base plate and the bolts, the mounting base can be firmly locked onto the mounting surface (such as a workbench or equipment frame), completely eliminating displacement of the base caused by vibration or external impact, providing an absolutely stable mounting foundation for the measuring scale, and reducing measurement errors caused by base offset at the source. The bolt fixing method has high strength and anti-loosening characteristics, can adapt to the harsh environment of industrial workshops with multiple vibrations and interferences, ensures long-term stable operation of the device, and meets the needs of high-precision, long-term measurement.

[0012] In one possible implementation, a magnet is provided at the bottom of the substrate for magnetically attaching the mounting base to the metal mounting surface. Compared with the prior art, the magnet at the bottom of the substrate enables rapid magnetic fixation of the mounting base to the metal mounting surface without the need for drilling or mounting bolts, saving installation time. Simultaneously, disassembly only requires overcoming magnetic force, adapting to measurement scenarios requiring frequent adjustments to the fixed position. In cases where permanent fixation is not required or drilling is inconvenient on the metal mounting surface, magnetic fixation provides a flexible fixation option for the device, expanding its applicability.

[0013] In one possible implementation, a level is provided on the base plate for detecting the levelness of the fixed base. Compared with the prior art, the level can detect the levelness of the fixed base in real time. The operator can adjust the position of the base in a timely manner based on the feedback from the level, ensuring that the fixed base is level. This ensures that the measuring ruler installed on the base meets the level measurement benchmark requirements, avoiding measurement errors caused by base tilt. No additional leveling tools are needed, simplifying the benchmark calibration process before measurement, improving operational efficiency, and ensuring that the calibration results are intuitive and reliable, reducing errors caused by inaccurate manual judgment of levelness.

[0014] In one possible implementation, both the first and second locking screws are hexagonal head screws. Compared with the prior art, the head structure of hexagonal head screws is easy to grip with a wrench, and it is less prone to slippage during disassembly and installation, making operation easier and faster. Especially when the locking state needs to be frequently adjusted (such as when changing measuring rulers), it can significantly reduce the difficulty of operation and improve work efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this application. Figure 1 ; Figure 2 This is a schematic diagram of the structure of this application. Figure 2 ; Figure 3 This is a schematic diagram of the structure of this application. Figure 3 ; Figure 4 The usage status of this application Figure 1 ; Figure 5 The usage status of this application Figure 2 ; Figure 6 The usage status of this application Figure 3 ; Explanation of reference numerals in the attached figures: 1. Fixed base; 11. Receiving groove; 111. First plane; 112. Second plane; 113. First screw hole; 114. Second screw hole; 12. Base plate; 121. Mounting hole; 2. Locking structure; 21. First locking screw; 22. Second locking screw; 3. Level; 10. Measuring ruler. Detailed Implementation

[0016] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0017] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0018] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0019] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] Example 1 See Figures 1 to 6 This application discloses a crane-specific measuring ruler fixing device, including: a fixing base 1 and a locking structure 2.

[0021] The fixed base 1 includes a receiving groove 11 and a base plate 12. The receiving groove 11 is designed as a rectangular groove structure with an open top, which is used to insert and remove the end of the measuring ruler 10. The inner sidewall of the receiving groove 11 forms two mutually perpendicular planes, namely a first plane 111 and a second plane 112; these two planes are used to fit tightly against the two adjacent right-angled sides of the measuring ruler 10, thereby limiting and calibrating the ruler in two directions. The base plate 12 is a rectangular steel plate, which is fixedly connected to the bottom of the receiving groove 11 by welding; the length and width of the base plate 12 are both larger than the external dimensions of the receiving groove 11, thereby significantly increasing the contact area between the device and the mounting surface such as the equipment platform, improving the stability of the placement, and preventing the device from tipping over or sliding during measurement.

[0022] The locking structure 2 includes two standard hexagonal head screws, namely the first locking screw 21 and the second locking screw 22. Two threaded holes are machined on the side wall of the receiving groove 11, namely the first threaded hole 113 and the second threaded hole 114. The axis of the first threaded hole 113 is perpendicular to the first plane 111, and the axis of the second threaded hole 114 is perpendicular to the second plane 112; both threaded holes communicate with the internal cavity of the receiving groove 11.

[0023] When using the device, the end of the measuring scale 10 is inserted into the receiving groove 11 through the opening, ensuring it is flush against the first plane 111 and the second plane 112. Then, the first locking screw 21 is tightened, causing its end to screw into and pass through the first screw hole 113, ultimately pressing against the side of the measuring scale 10 facing away from the first plane 111. The pressure generated by the screw firmly secures the measuring scale 10 to the first plane 111. Similarly, tightening the second locking screw 22 causes its end to press against the measuring scale 10 and secure it to the second plane 112. Through coordinated tightening in both directions, a secure and precise fixation of the end of the measuring scale 10 is achieved.

[0024] In this embodiment, to enhance friction and prevent scratches on the surface of the measuring ruler 10, anti-slip pads are attached to the first plane 111 and the second plane 112, respectively. The anti-slip pads are made of wear-resistant rubber with a high coefficient of friction and are firmly attached to the two planes of the receiving groove 11 using a high-strength adhesive. When the measuring ruler 10 is pressed against the surface, the rubber pads undergo slight deformation, increasing the static friction of the contact surface. This prevents the ruler from slipping before locking and provides a more flexible clamping force during locking, effectively protecting the ruler surface.

[0025] In this embodiment, to prevent the screw ends of the first locking screw 21 and the second locking screw 22 from directly pressing against the surface of the measuring scale 10 during tightening, causing indentations or scratches, a washer is installed at the screw ends of both screws. The washer is a circular nylon washer, pre-fixed to the screw ends. When the screws are screwed in and press against the measuring scale 10, the nylon washer contacts the scale surface. The nylon material is relatively soft, which can transmit the tightening force without damaging the surface of the measuring scale 10.

[0026] In this embodiment, mounting holes 121 are provided on the substrate 12 to achieve fixation under vibration. Specifically, a through hole is machined at each of the four corners of the substrate 12 as a mounting hole 121. In use, the fixing base 1 is placed in the predetermined position, and then four bolts are passed through the four mounting holes 121 in sequence and finally screwed into the threaded holes preset on the worktable surface, thereby firmly fixing the entire fixing device to the mounting surface, which is suitable for long-term and stable measurement positions.

[0027] In this embodiment, to facilitate quick installation and removal on the metal mounting surface, a magnet is embedded in the bottom of the substrate 12. Specifically, a groove is milled into the lower surface of the substrate 12, and a powerful neodymium iron boron permanent magnet is embedded and adhered in the groove. When it is necessary to fix the device to a metal mounting surface such as a machine tool, metal platform, or iron cabinet, it can be placed in position, and the strong attraction generated by the magnet can firmly attract it, making the fixation quick and reliable, and also convenient to move.

[0028] In this embodiment, to ensure the accuracy of the measurement reference, a level 3 is integrated and installed on the substrate 12. The level 3 is a bubble level 3, which is embedded and fixed in a countersunk hole on the upper surface of the substrate 12. Before using the device to fix the measuring ruler 10, the operator can determine whether the entire device is level by observing whether the bubble in the level 3 is centered. If it is not level, the device base can be finely adjusted to ensure that the fixed measuring ruler 10 is also in an accurate horizontal and vertical state, thereby fundamentally improving the measurement accuracy.

[0029] Example 2 The difference between this embodiment and Embodiment 1 lies in the optimized design of the receiving groove 11 to accommodate measuring rulers 10 with different widths and thicknesses. On the sidewall of the receiving groove 11 facing the first plane 111, multiple first screw holes 113 are machined at intervals along a direction perpendicular to the second plane 112. On the sidewall of the receiving groove 11 facing the second plane 112, multiple second screw holes 114 are machined at intervals along a direction perpendicular to the first plane 111. When fixing a narrower measuring ruler 10, the first screw hole 113 that best matches the width of the ruler can be selected to screw in the first locking screw 21; similarly, the second screw hole 114 that best matches the thickness can be selected to screw in the second locking screw 22. This multi-hole design greatly improves the versatility and applicability of the device.

[0030] The beneficial effects of this application include: 1. Precise and stable positioning: The vertical first plane 111 and second plane 112 of the receiving groove 11 are in contact with the measuring ruler 10. With the help of two vertical locking screws, the problem of easy deviation and tilting when manually held is solved, and the interference of mechanical vibration is resisted. The area of ​​the base plate 12 is larger than that of the receiving groove 11, which lowers the center of gravity and reduces the base offset, ensuring the accuracy of the measurement benchmark.

[0031] Second, it has strong adaptability. The screw holes of the accommodating tank 11 are arranged in a specific direction, and the screw holes can be selected according to different specifications of measuring scales 10. No separate device design is required, which reduces equipment costs.

[0032] Third, it combines protection and anti-slip: the flat anti-slip pad increases friction to prevent the ruler from sliding, and the washer at the end of the screw disperses pressure to avoid damage and deformation of the ruler surface.

[0033] IV. Flexible installation and convenient calibration: the base plate has 12 mounting holes and 121 bolts for vibration resistance, and the bottom magnet enables quick installation and removal of the metal surface; the integrated level 3 eliminates the need for additional tools, helps to quickly calibrate the base level, improves operating efficiency, and is suitable for industrial measurement needs.

[0034] In the description of the embodiments of this application, it should be noted that the terms "inner" and "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0035] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0036] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A crane-specific measuring ruler fixing device, characterized in that, include: A fixed base includes a receiving groove and a base plate; the receiving groove has an upwardly oriented opening, and the end of the measuring ruler is inserted into the receiving groove through the opening; the inner wall of the receiving groove has a first plane and a second plane for the measuring ruler to match and fit, and the first plane and the second plane are perpendicular to each other; the base plate is fixed to the bottom of the receiving groove, and the area of ​​the base plate is larger than the cross-sectional area of ​​the receiving groove. A locking structure includes a first locking screw and a second locking screw. The receiving groove is provided with a first screw hole that matches the first locking screw and a second screw hole that matches the second locking screw. The first screw hole communicates with the interior of the receiving groove and is oriented toward a first plane. The second screw hole communicates with the interior of the receiving groove and is oriented toward a second plane. The first locking screw is threadedly connected to the first screw hole, and the end of the screw can extend into the receiving groove to secure the measuring ruler against the first plane; the second locking screw is threadedly connected to the second screw hole, and the end of the screw can extend into the receiving groove to secure the measuring ruler against the second plane.

2. The crane-specific measuring ruler fixing device according to claim 1, characterized in that, The accommodating groove is provided with a plurality of first screw holes and a plurality of second screw holes; the plurality of first screw holes are arranged at intervals along a direction perpendicular to the second plane, and the plurality of second screw holes are arranged at intervals along a direction perpendicular to the first plane.

3. The crane-specific measuring ruler fixing device according to claim 1, characterized in that, Anti-slip pads are provided on both the first and second planes.

4. The crane-specific measuring ruler fixing device according to claim 1, characterized in that, The first and second locking screws have washers on their screw ends to prevent damage to the surface of the measuring scale.

5. The crane-specific measuring ruler fixing device according to claim 1, characterized in that, The substrate has mounting holes for fixing the mounting base to the mounting surface with bolts.

6. The crane-specific measuring ruler fixing device according to claim 1, characterized in that, The bottom of the substrate is provided with a magnet for magnetically attaching the fixing base to the metal mounting surface.

7. The crane-specific measuring ruler fixing device according to claim 1, characterized in that, The base plate is equipped with a level for detecting the levelness of the fixed base.

8. The crane-specific measuring ruler fixing device according to claim 1, characterized in that, Both the first and second locking screws are hexagonal head screws.

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